Cabbuketoe attachment



May 22, 1923.

c. D. BQWLES CARBURETOR ATTACHMENT Filed July 30 '1921 Patented May 22,1923.

CHAR-LES D. BOVJLES, F DES MOINES, IOWA.

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Application filed July 30, 1921. Serial No. 488,546.

ToaZZ whom it may concern: 1

Be it known that I, CHARLES D. Bownns, a citizen of the United States,residing at Des Moines, in the county of Polk and State of Iowa, haveinvented a certain new and useful Carburetor Attachment, of which thefollowing is a specification.

The object of my invention is to provide a carburetor attachment adaptedto -be interposed in the path of travel of. the fuel mixture from thecarburetor to the engine, the parts being of simple, durable andcomparatively inexpensive construction.

More particularly my invention relates toan auxiliary air attachment forcarburetors adapted to ,be placed between the carburetor and the intakemanifold of the engine; the

auxiliary air device being so arranged that an annular spray-of air isshot inwardly towards the center of the path of travel ofthe fuelmixture, whereby any unvapo-rized gas will be carried inwardly bythespray of air from the air device and become thoroughly mixed with thethoroughly vaporized gases. It is well known that the heavier particlesof gases which arenot thoroughly vaporized hang near or flow along as afilm on the Walls of the intake manifold and when received in thecylinders and the explosion occurs the heavier particles of gases formcarbon, which adheres to the cylinder walls.

My device is designed to provide an annular jet of air flowing into thefuel passage from position entirely surrounding the column of fuel intothe center of such column, carrying with it all fuel flowing along thepassage wall and breaking it up and thus supp-lying such fuel in properform to the cylinders, and preventing the feedin of raw gasoline or thelike.

.Vhile one advantage is the preventing of carbon being formed, at thesame timethe heavier particles of gases which'have been moved by mydevice towards the center of the path of travel of the gases willcause abetter combustion to be had, thus addi'ngto the efliciency and power ofthe engine. The adding of power and efliciencymeans that I am able toget-more miles per gallon of gasolene than when my device is not used.

Still anotherobject is to provide a pair. of intake openings forsecuring air to the distributing ring, the air intake openings being ofsubstantially, difl'erent sizes .so that the intake from one beinggreater than the other, it will cause to a certain extent a whirlingmotion to be given to the air discharged from the sprayer ring. v

With these and other objects in view my invention consists in theconstruction, arl'angement and combination of the various parts of mydevice, whereby the objects contemplated are attained, as hereinaftermore fully set forth, pointed out in my claim, and illustrated in theaccompanying drawings, in which:

Figure l is aside elevation of an intake manifold and carburetor with myimproved attachment installed therebet-ween.

Figure 2 is asectional view takenlon line 2 2 of Figure 1, parts beingbroken away and shown in section tobetter illustrate the constructionofv my device.

vIfigure 3 is a central, vertical, sectional view taken on the line 33of Figure 2, the parts being shown greatly enlarged to more clearlybring out the construction; and

Figure 4 is a detail, sectional view of a slightly modified form ofdevice.

In the accompanying drawings I have used the reference numeral 10 toindicate an ordinary carburetorwhich is provided with a flange 11 at itsdischarge end. An intake manifold 12 of the ordinary construction isprovided which has a flange 13 formed thereon; which flange 13 isdesigned to normally rest against the flange 11 of the carburetor.

Thc flanges 11 and 13 are each provided with'openings through which arenormally extended bolts 14 for securely holding them together. I

My improved carburetor attachment is designed to be received between theflanges 11 and 13.

My device consists of a plate 15 of substantially the same outline asthe flanges 11 and 13 and is provided w'itha pair of openings 16 nearits ends, which openings register with the openings in the flanges 11and 13 so that the bolts 14 may be extended therethrough for holding theplate 15 of my device between the flanges 11 and 13.

I provide gaskets 17 on each side of the plate 15 so that a tight jointmay be had between the plate 15 and the flanges on each of its sides.

The plate 15 is provided with an enlarged central opening 18 which is inalignment with the opening in the intake inanifold and the dischargeopenings of the carburetor 10. i

- tube shape, so as to permit maximum flow,

and the ring thus does not reduce the fuel mixture flow. Further thisshape of the ring tends to cause the fuel mixture to be divided towardthe center of the passage and,

the incoming air picks up the film of raw gasoline off the passage wall.This film is also aided in its flow along the wall to the opening in thering by the bevelled or rounded shape and is carried inwardly and withthe fuel mixture current away from the carburetor by the air jet.

The advantages of my device can readily be seen. The parts; are simpleand occupy only a minimum amount of space and can be completelyassembled and ready to put into operatio y arranging the plate 15 ofvarious sizes and shapes I am able to make mydevice fit on to any typeof manifold or type of carburetor.

Another advantage of my device is the equal distribution of the airwhich is drawn into the intake manifold through my attachment. The equaldistributing of the air insures me that all of the heavy particles ofgases willbe taken care of and not permitted to follow the walls of themanifold and permit carbon to be formed in the cylinders.

Another advantage is the more thorough mixing of the gases so that abetter combustion is had which increases the efiiciency of the engine.

Some changes may be made in the construction and arrangement of theparts of my device without departing from the real spirit and purpose ofmy invention, and it is my intention to cover by my claim, any modifiedforms of structure oruse of mechanical equivalents, which may bereasonably included within its scope.

I claim as my invention:

A carburetor device, comprising a fuel passage having an annular chamberprojecting into the path of travel of fuel passing through said passage,said. chamber having its outer surface inclined to direct the fuel fromthe wall of the passage inwardly and having an annular slot located toadmit air from said chamber to said passage for picking up the fuelonsaid surface, and means for admitting air to said chamber from theatmosphere, having an air inlet opening and a-valve for coacting withsaid opening subject to actuationaccording to the degree of vacuum inthe passage.

Des Moines, Iowa, July 27th, 1921.

CHARLES D. BOVVLES.

